fix(node): Deduplicate `sentry-trace` and `baggage` headers on outgoing requests - #19960

Merged

Lms24 merged 19 commits into

lms/fix-double-baggage-propagation

Mar 30, 2026

Commits on Mar 30, 2026

wip
Lms24
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12c3f51
use dedupe approach
Lms24
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63b7666
fix bug in baggage merging
Lms24
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8e7b3e8
fix(node): Avoid duplicated `sentry-trace` and `baggage` headers on fetch requests
Lms24
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32d3822
lint
Lms24
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a0b37a4
harden tests, fix http integration and propagator
Lms24
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e7eb933
remove console logs
Lms24
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7fb7814
adjust propagator tests
Lms24
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429dad1
convert undici node 18 string headers to array to dedupe and then back to string
Lms24
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9b0b7f9
always convert string headers to array headers (and back)
Lms24
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784e9df
harden browser integration test
Lms24
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978b88d
cleanup, fix test, fix colon bug in string->array header conversion
Lms24
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a9ff1bc
more cleanup
Lms24
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933a42f
even more cleanup
Lms24
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e300e33
more cleanup, fix edge case with odd headers, dedupe traceparent
Lms24
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4caafd8
last cleanup, one more test
Lms24
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ff6b436
improve mergeBaggageHeaders performance
Lms24
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e3e008e
remove unused imports
Lms24
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c9627af
log when failing to convert string to array header
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6b77c61